How do I work? I grope.

The man who regards his own life and that of his fellow-creatures as meaningless is not merely unfortunate but almost disqualified for life.

We should take care not to make the intellect our god; it has, of course, powerful muscles, but no personality.

When a man sits with a pretty girl for an hour, it seems like a minute. But let him sit on a hot stove for a minute-and it's longer than any hour. That's relativity.

Science without religion is lame, religion without science is blind.

The fairest thing we can experience is the mysterious. It is the fundamental emotion which stands at the cradle of true art and true science.

With fame I became more and more stupid, which of course is a very common phenomenon.

The important thing is not to stop questioning.

Everything should be as simple as it is, but not simpler.

More and more I come to value charity and love of one's fellow beings above everything else ... All our lauded technological progress - our very civilization - is like the axe in the hand of the pathological criminal.